70489951 has 4 divisors (see below), whose sum is σ = 80559952. Its totient is φ = 60419952.

The previous prime is 70489933. The next prime is 70489957. The reversal of 70489951 is 15998407.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70489951 - 2⁵ = 70489919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70489898 and 70489907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70489957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5034990 + ... + 5035003.

It is an arithmetic number, because the mean of its divisors is an integer number (20139988).

Almost surely, 2^70489951 is an apocalyptic number.

70489951 is a deficient number, since it is larger than the sum of its proper divisors (10070001).

70489951 is a wasteful number, since it uses less digits than its factorization.

70489951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10070000.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 70489951 is about 8395.8293813059. The cubic root of 70489951 is about 413.0878323748.

The spelling of 70489951 in words is "seventy million, four hundred eighty-nine thousand, nine hundred fifty-one".